The Abilities Required for Contemplative Practice (vipaśyanā-caryā)

In practicing the Buddhist path and contemplative practice (vipaśyanā-caryā), one's power of logical thinking must be strong; for the power of logical thinking to be strong, one's train of thought must be good; for the train of thought to be good, the mind must be clear; and for the mind to be clear, one must have meditative concentration (samādhi). Cultivating the power of logical thinking and possessing formidable capacity for reasoning and discernment—this is the greatest wealth of wholesome dharmas, the wellspring of wisdom, ever-flowing and inexhaustible, until one attains buddhahood.